Description

2,2'-(Cyclohexane-1,2-Diyl)Bisbenzoxazole is a specialized organic compound belonging to the benzoxazole class, known for its rigid, fused-ring structure. This compound matters as a high-performance fluorescent brightening agent (FBA) and optical brightener, providing exceptional whiteness and brightness enhancement to materials. Industries that need it include polymer manufacturing for engineering plastics, synthetic fiber production, and advanced coating formulations where superior optical properties and thermal stability are critical. Its unique molecular architecture makes it a valuable intermediate for developing light-stable, high-value functional materials.

Application

• Optical Brightener for Polymers: Primary use as a fluorescent whitening agent in polyamide (nylon), polyester (PET, PBT), and polycarbonate resins to improve visual appeal and perceived whiteness.
• Synthetic Fiber Additive: Incorporated into synthetic fibers like nylon and polyester during melt spinning to impart permanent brightness and counteract yellowing.
• High-Performance Coatings & Paints: Used in industrial and automotive coatings to enhance brightness, opacity, and light fastness.
• Advanced Material Intermediate: Serves as a key building block or additive in the synthesis of liquid crystals, OLED materials, and other photonic or electronic chemicals.
• Detergent & Paper Brightening (Specialty Grades): Applied in high-end laundry detergents and paper coatings where superior brightness and chemical stability are required.
• UV-Stabilizer Synergist: Works in conjunction with other UV absorbers and stabilizers in plastics to protect against photodegradation while maintaining color.

Basic Information

Product Name	2,2'-(Cyclohexane-1,2-Diyl)Bisbenzoxazole
CAS No.	73713-89-0
Molecular Formula	C₂₀H₁₈N₂O₂
Molecular Weight	318.37 g/mol
Synonyms	1,2-Bis(2-benzoxazolyl)cyclohexane; 2,2'-(1,2-Cyclohexanediyl)bisbenzoxazole; Fluorescent Brightener 135; FBA 135; Optical Brightener OB-135; 1,2-Cyclohexylenebisbenzoxazole; 2,2'-(1,2-Cyclohexylene)bisbenzoxazole; NSC 339586
EINECS	Contact for details

Quality Control

Our production of 2,2'-(Cyclohexane-1,2-Diyl)Bisbenzoxazole adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity, spectrophotometry for brightness value, and melting point determination, to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting all key parameters are provided with each shipment. We are committed to consistent quality, batch-to-batch reproducibility, and compliance with relevant industry standards for chemical intermediates.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. The product is light-sensitive and should be handled accordingly to maintain its optical properties.

Specification

Item	Specification
Appearance	Light yellow to white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.5%
Melting Point	285 - 295 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Brightness Value	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.